Background Project Question / Game Engine

[Chahunda15]

Hey guys/gals, I want to make an open world game that's kind of like the infamous series. Now I know that this is probably never getting finished by one guy but I would just want it as a project for when I get bored. My question is, what engine would I use to make it? UE4, Unity...

I also don't know what forum this would go in, so sorry if its the wrong one :)

[heepoo]

you can use unity or unreal engine or you can implement your own